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First, you'd need to have separate source queries for each event source. Inheritance isn't supported in queries.
In your adapter/source, you would need use reflection to populate the fields. Or you could have each payload support a specific interface that takes name/value pairs and populates the fields. Only the properties get passed into the query; your payloads aren't
present in the engine - they are only used for determining the schema.
In the "legacy" adapter model, you can also use untyped adapters; they enqueue events with name/value pairs. This isn't in the Reactive model introduced in 2.1; you would have to use another method.

DevBiker (aka J Sawyer)
Microsoft MVP - Sql Server (StreamInsight)

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